BluetoothModuleCode/TestBluetooth at master · MichiganNeuroProsthetics/BluetoothModuleCode · GitHub

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import processing.serial.*;
Serial myPort;
String ledStatus = "LED: OFF";

void setup(){
  size(450, 500);
  myPort = new Serial(this, "COM5", 38400);
  myPort.bufferUntil('\n');
}

void serial(Serial myPort){
  ledStatus = myPort.readStringUntil("\n");
}

void program(){
  bakcground(237, 240, 241);
  stroke(33);
  strokeWeight(1);
  rect(50, 100, 150, 50, 10);
  rect(250, 100, 150, 60, 10);
  fill(255);

  textSize(32);
  text("Turn ON", 60, 135);
  text("Turn OFF", 255, 135);
  textSize(24);
  fill(33)
  text("Status:", 180, 200);
  text(30);

  text(ledStatus, 155, 240);

  // If Turn ON is pressed
  if(mousePressed && mouseX>50 && mouseX<200 && mouseY>100 && mouseY<150){
    myPort.write('1');
  }

  // If Turn OFF is pressed
  if(mousePressed && mouseX>250 && mouseX<400 && mouseY>100 && mouseY<150){
    myPort.write('0');
  }

}